Google AdWords is an online advertising program that allows advertisers to create ads to target people interested in their products and services. Advertisers set up campaigns consisting of ad groups with keywords, ads, and bids. Each campaign is given a daily budget that aims to spend a set amount each day on showing ads. When people search Google and the keywords match, the ads are eligible to appear and the advertiser pays per click or per thousand impressions. Factors like ad relevance, landing page quality, and click-through rate determine an ad's quality score, which impacts ad ranking and bid prices. A high-quality campaign with relevant ads, keywords, and pages can result in lower costs and better performance.